Outbound control device of clothing hanging line system

Abstract

The utility model relates to an outbound control device of a clothing hanging line system, which comprises a power cylinder, a lowering frame, a front clamping jaw, a rear clamping jaw and a transmission mechanism, the front clamping jaw is hinged to the lowering frame, a piston rod of the power cylinder is hinged to the front clamping jaw, and the power cylinder can drive the front clamping jaw to rotate until a front blocking part enters or leaves a front blocking position. The clothes hanger assembly can be blocked when located at the front blocking position; the rear clamping jaw is hinged to the lowering frame and located on the side, close to the station entering side, of the front clamping jaw, the transmission mechanism is connected with the front clamping jaw and the rear clamping jaw, and when the front clamping jaw rotates, the transmission mechanism drives the rear clamping jaw to rotate to enable the rear blocking part to enter or leave the rear blocking position, and the rear blocking part can block the clothes hanger assembly when located at the rear blocking position. When the piston rod of the power cylinder moves to the maximum stroke position in the first direction, the front blocking part is located at the front blocking position, and the rear blocking part leaves the rear blocking position; when the piston rod moves in the second direction, the front blocking part moves towards the station entering side and leaves the front blocking position, and the rear blocking part enters the rear blocking position.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing production line equipment, in particular to an exit control device of a clothing hanging line system. Background Art

[0002] With the popularization of industrial automation, clothing automation equipment has been widely used, especially in the production line of clothing hanging line system. Figure 1 and attached Figure 2 The clothing hanging line system is provided with a track 1 and a hanger assembly 2 installed on the track 1. The hanger assembly 2 includes a roller 201 and a hanger body 202 connected to the roller 201. The track 1 transports the hanger assembly 2 to each workstation through the movement of the roller 201 on the track 1. An exit control device is provided at the workstation to realize the function of blocking the movement of the hanger assembly 2 and releasing it, thereby controlling the exit of the hanger assembly 2.

[0003] At present, the exit control device of the clothing hanging line system on the market mainly uses gas as the main actuator to realize the functions of blocking and releasing. Its structure is shown in the attached Figure 2 As shown, the exit control device mainly includes structures such as a cylinder 3, a lower frame 5 and a single claw 6. The lower frame 5 is fixedly arranged on the track 1. The cylinder 3 is hinged to the lower frame 5, and a rotating joint 303 is provided on its piston rod 301. The single claw 6 is hinged to the lower frame 5 and is hinged to the piston rod 301 of the cylinder 3. When the user has a release demand or the sensor automatically senses the feedback, the piston rod 301 of the cylinder 3 retracts backward when the solenoid valve is ventilated, driving the single claw 6 to rotate counterclockwise, and the front side of the single claw 6 no longer blocks the first hanger assembly 2 on the front side, and then the roller 201 of the first hanger assembly 2 slides freely under gravity or extrusion, and at the same time, the rear side of the single claw 6 blocks the roller 201 of the subsequent second hanger assembly 2 from continuing to slide down, and then the solenoid valve switches the air path direction to push the piston rod 301 of the cylinder 3 forward, and the single claw 6 rotates clockwise back to the initial position, and the front side continues to block the roller 201 of the subsequent hanger assembly 2 and maintains it, and the rear side disengages from the blocking roller 201, and the above operation is repeated to achieve a cyclic action of blocking and releasing. In the initial state, when the gas source pressure in the garment factory is low or the production line is cut off after get off work, the piston rod 301 of the cylinder 3 is in an extended state (i.e., the maximum stroke of the cylinder 3). If continuous and reasonable pressure is no longer provided, the roller 201 of the hanger assembly 2 will cause the single claw 6 to rotate counterclockwise under gravity or extrusion, causing the piston rod 301 of the cylinder 3 to retract under force, and then the first hanger assembly 2 will automatically slide down and roll down under the force, affecting the reasonable use of the production line. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the utility model is to provide an exit control device for a clothing hanging line system, which can stably and reliably block the movement of the hanger assembly and avoid the problem of the hanger assembly being released due to insufficient driving fluid in the power cylinder.

[0005] To achieve the above-mentioned purpose, the utility model provides an exit control device of a clothing hanging line system, which is used for controlling the exit of a hanger assembly on a track, and comprises a power cylinder and a lower rack, wherein the lower rack is fixedly arranged beside the track, the power cylinder is hinged to the lower rack, the power cylinder is a pneumatic cylinder or a hydraulic cylinder, the side of the exit control device used for the hanger assembly to enter is the entry side, and the side used for the hanger assembly to exit is the exit side, the exit control device also comprises a front claw, a rear claw and a transmission mechanism, the front claw is hinged to the lower rack, and a front blocking part is provided on the front claw, the piston rod of the power cylinder is hinged to the front claw, the power cylinder can drive the front claw to rotate to the front blocking part to enter or leave the front blocking position, and the front blocking part can block the hanger assembly from moving on the track when it is in the front blocking position. When the front claw is rotated, the rear claw is driven by the transmission mechanism to rotate so that the rear blocking part enters or leaves the rear blocking position, and when the rear blocking part is in the rear blocking position, it can block the hanger assembly from moving toward the exit side on the track; when the piston rod of the power cylinder moves along the first direction to the maximum stroke position, the front blocking part is in the front blocking position and the rear blocking part leaves the rear blocking position; when the piston rod of the power cylinder starts to move in the second direction from the maximum stroke position in the first direction, the front claw rotates to make the front blocking part move toward the entry side and leave the front blocking position, and the rear claw rotates until the rear blocking part enters the rear blocking position.

[0006] Furthermore, the power cylinder is a pneumatic cylinder.

[0007] Furthermore, the hanger assembly includes a roller installed on the track, and when the front blocking portion of the front claw is in the front blocking position, it enters into the moving path of the roller and can block the roller; when the rear blocking portion of the rear claw is in the rear blocking position, it enters into the moving path of the roller and can block the roller.

[0008] Furthermore, the front claw and the rear claw are both located on the upper side of the rail.

[0009] Furthermore, the rotation axes of the front clamping claw and the rear clamping claw on the lower frame are parallel, and the rotation directions of the two are the same or opposite.

[0010] Furthermore, the transmission mechanism comprises a connecting rod, and both ends of the connecting rod are respectively hinged to the front clamping claw and the rear clamping claw.

[0011] Furthermore, the connecting rod and the front clamping claw, as well as the front clamping claw and the piston rod of the cylinder are hinged together through a long shaft pin.

[0012] Furthermore, the front clamping claw, the rear clamping claw and the connecting rod are all made of plastic.

[0013] Furthermore, the transmission mechanism includes a front transmission wheel and a rear transmission wheel, the front transmission wheel is fixed to the front clamping claw, and its axis is located on the rotation axis of the front clamping claw, the rear transmission wheel is fixed to the rear clamping claw, and its axis is located on the rotation axis of the rear clamping claw, and the front transmission wheel and the rear transmission wheel are directly meshed and connected or transmitted through an intermediate transmission assembly.

[0014] Furthermore, the front transmission wheel and the rear transmission wheel are transmission-connected via an intermediate transmission assembly, and the intermediate transmission assembly includes an idler wheel, and both the front transmission wheel and the rear transmission wheel are meshed with the idler wheel.

[0015] As described above, the exit control device involved in the utility model has the following beneficial effects:

[0016] It can achieve a self-locking effect when blocking the exit state to prevent the hanger assembly from sliding down and exiting the station, and can smoothly release the hanger without affecting efficiency. It works stably and reliably and can effectively avoid the influence of oil or gas entering the power cylinder. The same cylinder can be used as the main actuator, and improvements are made on the existing structure. The modification cost is low, which solves the problems of the existing device in use and improves the comprehensive competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation of the outbound control device in the clothing hanging line system.

[0018] Figure 2 It is a structural diagram of an existing outbound control device.

[0019] Figure 3 The figure is a working diagram of the existing exit control device in the exit blocking state.

[0020] Figure 4 The figure is a working diagram of the existing exit control device in the exit release state.

[0021] Figure 5 It is a structural schematic diagram of the first embodiment of the exit control device of the utility model.

[0022] Figure 6 This is a schematic diagram of the operation of the first embodiment of the exit control device of the utility model in the exit blocking state.

[0023] Figure 7 This is a schematic diagram of the operation of the first embodiment of the exit control device of the utility model in the exit release state.

[0024] Figure 8 This is a structural diagram of Embodiment 2 of the exit control device of the present utility model.

[0025] Fig. 9 It is a structural diagram of Embodiment 3 of the exit control device of the present utility model.

[0026] Description of Figure Numbers

[0027] 1 track

[0028] 2 hanger components

[0029] 201 roller

[0030] 202 hanger body

[0031] 3 cylinders

[0032] 301 piston rod

[0033] 302 air pipe connector

[0034] 303 swivel joint

[0035] 4 long axle pins

[0036] 5 Lower shelf

[0037] 501 support seat

[0038] 502 bracket

[0039] 6 single jaws

[0040] 7 front claws

[0041] 701 front blocking part

[0042] 8 rear claws

[0043] 801 rear blocking part

[0044] 9-link

[0045] 10 Rotation pin

[0046] 11 front drive wheel

[0047] 12 rear drive wheel

[0048] 13 Idler

[0049] A. Installation location of the outbound control device DETAILED DESCRIPTION

[0050] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0051] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0052] See also Figures 1 to 9 The utility model provides an exit control device of a clothing hanging line system, which is used to control the exit of a hanger assembly 2 on a track 1, wherein the hanger assembly 2 generally includes a roller 201 mounted on the track 1, and a hanger body 202 connected to the roller 201, and moves along the track 1 by the roller 201 rolling on the track 1. Of course, the hanger assembly 2 can also move by sliding a hook on the track 1. The exit control device includes a power cylinder and a lower rack 5, the lower rack 5 is fixedly arranged beside the track 1, the power cylinder is hinged to the lower rack 5, the power cylinder is a cylinder 3 or a hydraulic cylinder, and is driven by a driving fluid such as gas or hydraulic oil, wherein the power cylinder is bidirectional and has two interfaces, and the telescopic movement of its piston rod 301 is driven by controlling the air or oil intake of the two interfaces. The power cylinder is an existing structure, and the specific structural principle will not be described in detail. The side of the exit control device used for the hanger assembly 2 to enter is the entry side, and the side used for the hanger assembly 2 to exit is the exit side. In the present application, for the sake of convenience of explanation, the direction of the hanger's exit movement is the front, that is, the exit side of the exit control device is its front side, and the progress side is its rear side.

[0053] The special feature of the exit control device of the utility model is that it also includes a front claw 7, a rear claw 8 and a transmission mechanism. Figure 5 , Figure 8 and Fig. 9The front claw 7 is hinged to the lower rack 5, and a front blocking portion 701 is provided on the front claw 7. The piston rod 301 of the power cylinder is hinged to the front claw 7. The power cylinder can drive the front claw 7 to rotate on the lower rack 5 until the front blocking portion 701 enters or leaves the front blocking position, and when the front blocking portion 701 is in the front blocking position, it can block the hanger assembly 2 from moving toward the exit side on the track 1. The rear claw 8 is hinged to the lower rack 5 and is located on the side of the front claw 7 close to the entry side, that is, located on the rear side of the front claw 7. A rear blocking portion 801 is provided on the rear claw 8. The transmission mechanism connects the front claw 7 and the rear claw 8. When the front claw 7 rotates, it is driven by the transmission mechanism. After the movement, the claw 8 rotates on the lower rack 5 to make the rear blocking part 801 enter or leave the rear blocking position, and when the rear blocking part 801 is in the rear blocking position, it can block the hanger assembly 2 from moving toward the exit side on the track 1; when the piston rod 301 of the power cylinder moves along the first direction to the maximum stroke position, the front blocking part 701 is in the front blocking position and the rear blocking part 801 leaves the rear blocking position; when the piston rod 301 of the power cylinder starts to move along the second direction from the maximum stroke position in the first direction, the front claw 7 rotates to make the front blocking part 701 move toward the entrance side and leave the front blocking position, and the rear claw 8 rotates until the rear blocking part 801 enters the rear blocking position. The first direction movement of the piston rod 301 of the power cylinder can be the retracting movement direction, and the second movement direction is the extending movement direction, or vice versa, that is, the first direction movement is the extending movement direction, and the second movement direction is the retracting movement direction, and the working principle is the same.

[0054] The main working principle of the exit control device involved in the utility model is: (a) in the initial state, refer to Figure 6 At this time, the power cylinder is at the maximum stroke position in the first direction (taking the piston rod 301 as an example in a fully retracted state), the front claw 7 moves to the front blocking portion 701 at the front blocking position, which can block the frontmost hanger assembly 2, and at the same time, the rear blocking portion 801 of the rear claw 8 leaves the rear blocking position, which does not affect the subsequent hanger assembly 2 from entering and approaching the frontmost hanger assembly 2, and the exit control device is in the exit blocking state; (b) When it is necessary to release the exit, the piston rod 301 of the power cylinder extends forward, see Figure 7 , driving the front claw 7 to rotate clockwise, so that the front blocking part 701 moves toward the entrance side (rear side), and at the same time driving the rear claw 8 to rotate through the transmission structure, when the piston rod 301 of the power cylinder preferably reaches the maximum extension stroke, the front blocking part 701 has completely left the front blocking position, releasing the frontmost hanger assembly 2, and the rear blocking part 801 enters the rear blocking position, located between the two frontmost hanger assemblies 2, blocking the second hanger assembly 2 from sliding forward, and the exit control device is in the exit release state; then the piston rod 301 of the power cylinder is retracted, and the exit control device returns to the initial state, see Figure 6, the front claw 7 returns to block the hanger assembly 2 that is now at the front. In the exit blocking state, the hanger assembly 2 will apply a forward force to the front blocking portion 701 of the front claw 7, which drives the front blocking portion 701 to move toward the exit side, that is, the front claw 7 should rotate counterclockwise, and the piston rod 301 should continue to be retracted, but at this time the piston rod 301 of the power cylinder is already in a fully retracted state, so the front claw 7 has been locked by the power cylinder. At this time, even if the oil or gas pressure of the power cylinder is insufficient, the hanger assembly 2 will not push the front claw 7 away, thereby ensuring the stability and reliability of the blocking effect. The working principle is the same when the working direction of the piston rod 301 of the power cylinder is reversed.

[0055] The exit control device of the utility model can achieve a self-locking effect when blocking the exit state, preventing the hanger assembly 2 from sliding down and exiting the station. It works stably and reliably, can effectively avoid the influence of oil or gas entering the power cylinder, and can be improved on the existing structure with low modification cost.

[0056] The present invention is further described below with reference to several specific embodiments:

[0057] Embodiment 1:

[0058] See also Figure 5 , Figure 6 and Figure 7 In this embodiment, as a preferred design, the power cylinder is an air cylinder 3, and two air pipe joints 302 are provided on the air cylinder 3 for air inlet and outlet. The telescopic movement of the piston rod 301 is controlled by controlling the air inlet and outlet of the two air pipe joints 302. The end of the piston rod 301 is fixedly connected to a rotating joint 303, which is hinged to the front claw 7 through the rotating joint 303 for convenient connection. In this embodiment, preferably, the retraction direction of the piston rod 301 of the power cylinder is its first direction, see Figure 6 When the piston rod 301 is in a fully retracted state, the front claw 7 blocks the front hanger assembly 2 in the station.

[0059] In this embodiment, the hanger assembly 2 includes a roller 201 mounted on the track 1. When the front blocking portion 701 of the front claw 7 is located at the front blocking position, it enters the moving path of the roller 201, that is, it directly blocks the movement of the roller 201, thereby better blocking the movement of the hanger assembly 2. Similarly, when the rear blocking portion 801 of the rear claw 8 is located at the rear blocking position, it enters the moving path of the roller 201 of the hanger assembly 2, and also directly blocks the movement of the roller 201. Obviously, in other embodiments, the front blocking portion 701 and the rear blocking portion 801 can also be in contact with other suitable positions of the hanger assembly 2 and achieve blocking, so as to prevent the hanger assembly 2 from moving forward.

[0060] In this embodiment, see Figure 5 , Figure 6and Figure 7 The front claw 7 and the rear claw 8 are both located on the upper side of the track 1, and the rotation axes of the front claw 7 and the rear claw 8 on the lower frame 5 are parallel and perpendicular to the track 1 here, and are preferably horizontal. When the front claw 7 and the rear claw 8 rotate, the front blocking part 701 and the rear blocking part 801 both move downward to their respective blocking positions.

[0061] In this embodiment, see Figure 5 , Figure 6 and Figure 7 The transmission mechanism includes a connecting rod 9, and the two ends of the connecting rod 9 are respectively hinged to the front claw 7 and the rear claw 8. The connecting rod 9, the front claw 7, the rear claw 8 and the lower frame 5 together constitute a parallelogram four-link 9 mechanism. When the front claw 7 moves, the rear claw 8 is driven by the connecting rod 9 to rotate synchronously and in the same direction. Further preferably, the connecting rod 9 and the front claw 7, as well as the front claw 7 and the piston rod 301 of the cylinder 3 are hinged together through a long shaft pin 4, and the long shaft pin 4 passes through the rotating joint 303, the front claw 7 and the connecting rod 9 at the same time, and the three are hinged at one point at the same time, wherein the long shaft pin 4 adopts a cotter pin for easy connection. The transmission method using the above-mentioned connecting rod 9 has a simple structure, stable operation, small improvement and low cost.

[0062] In this embodiment, see Figure 5 , Figure 6 and Figure 7 The lower rack 5 is directly fixedly connected to the lower side of the track 1. Of course, the lower rack 5 can also be fixed to the fixing mechanism around the track 1 to keep it fixed to the track 1. The lower rack 5 is fixed with a support seat 501 and a bracket 502. The bracket 502 is located at the top of the lower rack 5, and the cylinder 3 is hinged on the bracket 502. The support seat 501 is fixed to the inside of the lower rack 55 by screws, and the front claw 7 and the rear claw 8 are respectively hinged to the support seat 501 by a rotating pin 10, which is convenient for installation.

[0063] In this embodiment, preferably, the front clamping claw 7, the rear clamping claw 8, the support seat 501 and the connecting rod 9 are made of plastic, which meets the performance requirements and can reduce the production cost of parts.

[0064] Embodiment 2:

[0065] See also Figure 7In this embodiment, the transmission mechanism includes a front transmission wheel 11 and a rear transmission wheel 12. The front transmission wheel 11 is fixed to the front claw 7, and its axis is located on the rotation axis of the front claw 7 on the support seat 501. The rear transmission wheel 12 is fixed to the rear claw 8, and its axis is located on the rotation axis of the rear claw 8 on the support seat 501. The front transmission wheel 11 and the rear transmission wheel 12 are connected by an intermediate transmission assembly, wherein the intermediate transmission assembly includes an idler wheel 13. The front transmission wheel 11 and the rear transmission wheel 12 are both meshed with the idler wheel 13. When the front claw 7 rotates, the rear claw 8 is driven to rotate through the transmission of the front transmission wheel 11, the idler wheel 13 and the rear transmission wheel 12, and the rotation direction of the rear claw 8 is the same as that of the front claw 7. In addition, the intermediate transmission assembly can also be used in other ways, such as a belt. The other parts of this embodiment are the same as those in the first embodiment and will not be described in detail.

[0066] Embodiment three:

[0067] See also Figure 7 In this embodiment, the transmission mechanism also includes a front transmission wheel 11 and a rear transmission wheel 12. The front transmission wheel 11 is fixed to the front claw 7, and its axis is located on the rotation axis of the front claw 7 on the support seat 501. The rear transmission wheel 12 is fixed to the rear claw 8, and its axis is located on the rotation axis of the rear claw 8 on the support seat 501. The installation method of the front transmission wheel 11 and the rear transmission wheel 12 is the same as that in the second embodiment. The difference is that, in this embodiment, the front transmission wheel 11 and the rear transmission wheel 12 are directly meshed for transmission. At this time, the rotation directions of the front transmission wheel 11 and the rear transmission wheel 12 are opposite, that is, the rotation directions of the rear claw 8 and the front claw 7 are opposite.

[0068] The transmission mechanism in the present invention is not limited to the above examples, and other existing suitable mechanisms can also be used as long as they can achieve the above transmission function.

[0069] As can be seen from the above, the exit control device of the utility model has the following beneficial effects:

[0070] It can achieve a self-locking effect when blocking the exit state, preventing the hanger assembly 2 from sliding down and exiting the station, and can smoothly release the hanger without affecting efficiency. It works stably and reliably, and can effectively avoid the influence of oil or gas entering the power cylinder. The same cylinder 3 can be used as the main actuator to improve the existing structure. The modification cost is low, which solves the problems of the existing device in use and improves the comprehensive competitiveness of the product.

[0071] In summary, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An exit control device for a clothing hanging line system, used for controlling the exit of a hanger assembly (2) on a track (1), comprising a power cylinder and a lower rack (5), wherein the lower rack (5) is fixedly arranged beside the track (1), the power cylinder is hinged to the lower rack (5), the power cylinder is a pneumatic cylinder (3) or a hydraulic cylinder, the exit control device has a side for the hanger assembly (2) to enter as an entry side, and a side for the hanger assembly (2) to exit as an exit side, characterized in that: The exit control device further comprises a front clamping claw (7), a rear clamping claw (8) and a transmission mechanism, wherein the front clamping claw (7) is hinged to the lower rack (5), and a front blocking portion (701) is provided on the front clamping claw (7), the piston rod (301) of the power cylinder is hinged to the front clamping claw (7), the power cylinder can drive the front clamping claw (7) to rotate to the front blocking portion (701) to enter or leave the front blocking position, and when the front blocking portion (701) is located at the front blocking position, it can block the hanger assembly (2) from moving toward the exit side on the track (1); the rear clamping claw (8) is hinged to the lower rack (5) and is located on a side of the front clamping claw (7) close to the entry side, the rear clamping claw (8) is provided with a rear blocking portion (801), and the transmission mechanism connects the front clamping claw (7) and the rear clamping claw (8). When the front clamping claw (7) rotates, the rear clamping claw (8) is driven to rotate through the transmission mechanism so that the rear blocking portion (801) enters or leaves the rear blocking position, and when the rear blocking portion (801) is located at the rear blocking position, it can block the hanger assembly (2) from moving toward the exit side on the track (1); when the piston rod (301) of the power cylinder moves along the first direction to the maximum stroke position, the front blocking portion (701) is located at the front blocking position and the rear blocking portion (801) leaves the rear blocking position; when the piston rod (301) of the power cylinder starts to move along the second direction from the maximum stroke position in the first direction, the front clamping claw (7) rotates so that the front blocking portion (701) moves toward the entrance side and leaves the front blocking position, and the rear clamping claw (8) rotates until the rear blocking portion (801) enters the rear blocking position.

2. The exit control device according to claim 1, characterized in that: The power cylinder is a pneumatic cylinder (3).

3. The exit control device according to claim 1, characterized in that: The hanger assembly (2) comprises a roller (201) mounted on a track (1); when the front blocking portion (701) of the front clamping claw (7) is located at the front blocking position, it enters into the moving path of the roller (201) and is capable of blocking the roller (201); when the rear blocking portion (801) of the rear clamping claw (8) is located at the rear blocking position, it enters into the moving path of the roller (201) and is capable of blocking the roller (201).

4. The exit control device according to claim 1, characterized in that: The front clamping claw (7) and the rear clamping claw (8) are both located on the upper side of the track (1).

5. The exit control device according to claim 1, characterized in that: The rotation axes of the front clamping claw (7) and the rear clamping claw (8) on the lower frame (5) are parallel, and the rotation directions of the two are the same or opposite.

6. The exit control device according to claim 1 or 5, characterized in that: The transmission mechanism comprises a connecting rod (9), and two ends of the connecting rod (9) are respectively hinged to the front clamping claw (7) and the rear clamping claw (8).

7. The exit control device according to claim 6, characterized in that: The connecting rod (9) and the front clamping claw (7), as well as the front clamping claw (7) and the piston rod (301) of the cylinder (3) are hinged together via a long shaft pin (4).

8. The exit control device according to claim 6, characterized in that: The front clamping claw (7), the rear clamping claw (8) and the connecting rod (9) are all made of plastic.

9. The exit control device according to claim 1, characterized in that: The transmission mechanism comprises a front transmission wheel (11) and a rear transmission wheel (12); the front transmission wheel (11) is fixed to the front claw (7), and its axis is located on the rotation axis of the front claw (7); the rear transmission wheel (12) is fixed to the rear claw (8), and its axis is located on the rotation axis of the rear claw (8); the front transmission wheel (11) and the rear transmission wheel (12) are directly meshed and connected or are connected through an intermediate transmission assembly.

10. The exit control device according to claim 9, characterized in that: The front transmission wheel (11) and the rear transmission wheel (12) are connected in transmission via an intermediate transmission assembly, wherein the intermediate transmission assembly comprises an idler wheel (13), and both the front transmission wheel (11) and the rear transmission wheel (12) are meshed with the idler wheel (13).

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